The Unit pursues a terrorist who was smuggled into the U.S. with plans to detonate a bomb, and Kim worries after she witnesses an intruder on base talking to her daughter.
The teams frees a former Unit operative in hopes that he will help them track down the world's leading arms leader, and Molly recruits a young soldier away from the military.
The Unit faces a dilemma while evacuating an exiled dictator from an American hospital during a deadly hurricane, and Mack and Tiffy decide to have another baby.
When a mission to Iran goes horribly wrong the Defense Department demands to know whether the Unit's actions in the field have created an international incident.
A mission to assassinate a Latin American oil minister is compromised after a "freedom of the press" issue results in a reporter getting a heads-up on the mission.
